OLED Panel Temperature Mapping for Pixel Deterioration Prediction
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Solution Overview
Problem
OLED displays experience accelerated pixel deterioration due to heat generated during the driving process, which is not effectively addressed by existing technologies.
Innovation Solution
A display device and method that includes a display unit, a driver integrated circuit, and a storage medium to store temperature information, allowing for the prediction of pixel deterioration by generating a temperature map based on heat distribution and other relevant information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the driver integrated circuit is driven at high power to improve display performance, then the luminance and color quality are improved, but the heat generation increases causing accelerated pixel deterioration
Solution Approach 1:
The patent performs preliminary temperature measurement and deterioration prediction before actual use. By measuring temperature at multiple locations on the display panel before operation and predicting deterioration based on these measurements, the system can identify high-risk areas in advance and implement preventive measures to protect pixels from heat-induced deterioration during high-power operation.
Solution Approach 2:
The patent implements a feedback mechanism where temperature information from multiple locations is continuously monitored and fed back to the control circuit. This feedback enables real-time adjustment of driving parameters or activation of protective measures in response to temperature changes, preventing excessive heat accumulation that would accelerate pixel deterioration.
2Duration of action of moving object
If the driver integrated circuit is driven for extended periods to maintain display operation, then the display functionality is maintained, but heat accumulation accelerates pixel deterioration
Solution Approach 1:
The patent measures temperature at multiple locations before extended operation begins and uses this preliminary data to predict deterioration trends. By having advance temperature information, the system can monitor temperature changes during extended operation and detect when thresholds are approached, enabling timely intervention to prevent accelerated deterioration.
Solution Approach 2:
The patent continuously monitors temperature at multiple locations during extended operation and uses this feedback to track heat accumulation trends. The control circuit can detect when temperature exceeds safe thresholds and implement protective measures such as reducing driving power or activating cooling mechanisms to prevent heat-induced pixel deterioration.
3Measurement precision
If temperature measurement is performed at multiple locations to improve prediction accuracy, then the deterioration prediction precision is improved, but the measurement complexity and time increase
Solution Approach 1:
The patent divides the display panel into multiple measurement locations (e.g., first location, second location, third location) and measures temperature at each segment. This segmentation allows the system to capture spatial temperature variations across the panel, improving prediction accuracy by identifying specific high-temperature areas that are most prone to deterioration.
Solution Approach 2:
The patent measures temperature at more locations than the minimum required, using excessive measurement points to ensure comprehensive coverage of potential hot spots. By measuring at multiple locations including areas that may not be immediately obvious, the system achieves robust deterioration prediction even though the measurement complexity increases.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate prediction of pixel deterioration speed by analyzing heat generation and distribution, facilitating proactive maintenance and extending the lifespan of OLED displays.
Implementation Method 1
Heat generated in a process of driving the driver integrated circuit may be transferred to the display unit
Implementation Method 2
Heat generated in a process of driving the driver integrated circuit may be transferred to the display unit
Implementation Method 3
The temperature measurement value may be a value measured using a thermal imaging camera
Data Source
AI summary
According to an embodiment of the disclosure, a display device includes a display unit including a plurality of areas, a driver integrated circuit including a plurality of integrated circuits driving the display unit, and a storage medium configured to store temperature information of the display unit. Each of the temperature information includes data for temperature increment values for each area of the display unit when the driver integrated circuit is driven.